CN104564328A

CN104564328A - Internal combustion engine and separator structure thereof

Info

Publication number: CN104564328A
Application number: CN201410575561.4A
Authority: CN
Inventors: 栗田洋孝; 川合启之; 椎木诚一; 江森直树
Original assignee: Aisin Seiki Co Ltd
Current assignee: Aisin Corp
Priority date: 2013-10-28
Filing date: 2014-10-24
Publication date: 2015-04-29
Anticipated expiration: 2034-10-24
Also published as: CN104564328B; US20150114368A1; EP2865934A1; EP2865934B1; US9581061B2

Abstract

An internal combustion engine is provided to effectively prevent vapour condensation in blow-by gas flowing in a separator portion so as to avoid mix condensation water in oil recycled by the separator portion. An internal combustion engine (100) includes a cylinder block (2), an auxiliary machinery attachment member (5) arranged at a side wall (2c) of the cylinder block (2), the auxiliary machinery attachment member (5) to which a water pump (70) is attached, and a separator portion (6) disposed in a void (4) between the cylinder block (2) and the auxiliary machinery attachment member (5), the separator portion (6) being provided as a separate member from the cylinder block (2) and the auxiliary machinery attachment member (5) to perform gas-liquid separation on blow-by gas.

Description

The cyclone separator arrangement of internal-combustion engine and internal-combustion engine

Technical field

The present invention relates to the cyclone separator arrangement of internal-combustion engine and internal-combustion engine, particularly possess the internal-combustion engine in separator portion and the cyclone separator arrangement of internal-combustion engine for carrying out gas-liquid separation to blow-by gas.

Background technique

In the past, the known internal-combustion engine (for example, referring to patent documentation 1) possessing separator portion for carrying out gas-liquid separation to blow-by gas.

In above-mentioned patent documentation 1, disclose a kind of internal-combustion engine, possess: metal cylinder block; The metal subsidiary engine bracket (subsidiary engine mounting structure) of assembling subsidiary engine class; And ventilation chamber (separator portion).In the internal-combustion engine that this patent documentation 1 is recorded, under the state being fixed on the sidewall of cylinder block at subsidiary engine bracket, utilize the surface of the sidewall of band concavity of mutually relative cylinder block and the band concavity of the side, department of assembly of subsidiary engine bracket, be formed with the space portion that inwall has the concaveconvex shape of regulation.This space portion is called as ventilation chamber, has the effect as the separator portion by escaping to the oily separation and recovery in the blow-by gas of crankshaft room from cylinder bottom.In addition, the part that combustion motor carries out the cooling water path cooled runs through ventilation chamber across tube wall.Thus, the heat transfer of the cooling water after being heated by internal-combustion engine is heated to ventilation chamber side to ventilation chamber (space portion), prevents the water vapour condensation in the blow-by gas of vent chamber circulation.

prior art document

patent documentation

Patent documentation 1: specially permit No. 3423649 publication

Summary of the invention

the problem that invention will solve

But, in the ventilation chamber structure that the internal-combustion engine of above-mentioned patent documentation 1 record has, utilize the sidewall of band concavity of mutually relative cylinder block and the surface of the band concavity of subsidiary engine bracket to form ventilation chamber (separator portion), therefore vent chamber is easily subject to the impact of external air temperature.Particularly the cooling water temperature of motor is also low when the low and startup of internal-combustion engine of external air temperature etc., metal cylinder block, subsidiary engine bracket also become cold state, and ventilation chamber (separator portion) and inside thereof are not easy to heat.Therefore, after internal-combustion engine just starts, the water vapour in the blow-by gas of still cold vent chamber circulation occurs there is this water of condensation and be easily mixed into the problem of having carried out the oil of gas-liquid separation in vent chamber as water of condensation.

The present invention completes to solve the problem, and 1 object of the present invention is to provide the water vapour condensation in the blow-by gas that can realize effectively preventing from circulating in separator portion thus the cyclone separator arrangement of the internal-combustion engine in the oil avoiding water of condensation to be mixed into utilizing separator portion to reclaim and internal-combustion engine.

for the scheme of dealing with problems

To achieve these goals, the internal-combustion engine of the 1st aspect of the present invention possesses: cylinder block; Subsidiary engine mounting structure, it is configured in the sidewall of cylinder block, and subsidiary engine is assemblied in above-mentioned subsidiary engine mounting structure; And separator portion, it is configured in the space between cylinder block and subsidiary engine mounting structure, and independently arranges relative to cylinder block and subsidiary engine mounting structure, for carrying out gas-liquid separation to blow-by gas.

In internal-combustion engine in the of the present invention 1st, as mentioned above, possesses separator portion, separator portion is configured at the space between cylinder block and subsidiary engine mounting structure, and independently arrange relative to cylinder block and subsidiary engine mounting structure, can be used as thermal-protective coating together with the gap portion between subsidiary engine mounting structure with separator portion and the gap portion between cylinder block with separator portion thus, the separator portion independent (individual components) formed carries out heat isolation relative to the cylinder block and subsidiary engine mounting structure that are directly exposed to outside air.Namely, separator portion separates gap portion (thermal-protective coating) and heat insulation, be not easy the impact being directly subject to external air temperature thus, therefore when internal-combustion engine stops being placed in the low environment of external air temperature, when when also having internal combustion engine start, the cooling water temperature of the internal-combustion engine such as (just start after) does not fully heat up, the temperature in control separation device portion reduces.Thus, maintain the heat insulating ability in separator portion, therefore can effectively prevent the water vapour in the blow-by gas circulated in separator portion from condensing.Consequently, can avoid being mixed into water of condensation in the oil that reclaimed by separator portion.

In addition, in internal-combustion engine in the above-mentioned 1st, separator portion is provided with relative to cylinder block and subsidiary engine mounting structure independent (individual components), be not limited to the oily separate mode (such as inertial collision formula, mazy type, vortex type and filtering type etc.) from blow-by gas, oil being carried out gas-liquid separation thus, separator portion of the present invention can be loaded internal-combustion engine.According to the design pattern of internal-combustion engine, different to the oily trapping ability (feature on the design pattern in separator portion) required by separator portion, but no matter for having the separator portion of which kind of oily separate mode, effectively can realize the condensation being prevented the water vapour in blow-by gas by the insulation in separator portion, can avoid being mixed into water of condensation in the oil after gas-liquid separation.Due to this point, serviceability of the present invention is high.

In internal-combustion engine preferably in the above-mentioned 1st, separator portion is so that the state having a gap for subsidiary engine mounting structure of looking younger is configured in the space between cylinder block and subsidiary engine mounting structure.According to this formation, separate gap relative to the subsidiary engine mounting structure being easily directly subject to the impact of external air temperature without heating source etc. in space, configure separator portion, even if therefore under the state of the subsidiary engine mounting structure cooling due to outside air, this gap also can play the effect of thermal-protective coating, the temperature making subsidiary engine mounting structure not easily directly heat transfer to the separator portion in space.Thus, effectively can maintain the heat insulating ability of separator portion relative to external air temperature, the water vapour therefore can reliably sought in the blow-by gas preventing from circulating in separator portion condenses due to external air temperature.

In above-mentioned separator portion so that look younger in the formation of state configuration subsidiary engine mounting structure to gap, preferred separator portion is configured in the space between cylinder block and subsidiary engine mounting structure with the state relative to both subsidiary engine mounting structure and cylinder block with gap.According to this formation, not only also separate gap configuration separator portion relative to cylinder block relative to the subsidiary engine mounting structure easily by the impact of external air temperature, therefore under the cooling water temperature of motor is not warmed up to the low-temperature condition of set point of temperature when internal combustion engine start etc., also the gap arranged relative to both subsidiary engine mounting structure and cylinder block can be utilized to obtain effect of heat insulation (heat-shielding performance), reliably can be incubated the separator portion maintained in space.Therefore, the water vapour condensation in the blow-by gas circulated in separator portion after particularly reliably preventing internal-combustion engine just cold start-up.

In above-mentioned separator portion so that look younger in the formation of state configuration subsidiary engine mounting structure to gap, preferably in separator portion and the gap at least between subsidiary engine mounting structure, be provided with thermal-protective coating.According to this formation, utilize the thermal-protective coating in the gap be located between separator portion and subsidiary engine mounting structure, even if the effect of heat insulation (heat-shielding performance) relative to subsidiary engine mounting structure also can be obtained under the state of subsidiary engine mounting structure cooling, the separator portion in space can be made reliably to be incubated.

In this case, preferred thermal-protective coating comprises air layer.According to this formation, do not use the special material playing effect of heat insulation (heat-shielding performance) only air layer to be used as thermal-protective coating to form thermal-protective coating, thus separator portion and the gap at least between subsidiary engine mounting structure can be made easily to play heat-shielding performance.

In internal-combustion engine in the above-mentioned 1st, preferred separator portion is formed as having labyrinth structure in inside.According to this formation, the inner space in separator portion becomes labyrinth structure, therefore blow-by gas can be made to be stranded in be formed by inner wall part (internal face) and the inner space in separator portion that is extended of flow path length, the particulate mist of oil contained in blow-by gas can be trapped efficiently.In addition, in the process of blow-by gas circulation, make mist of oil repeatedly collide complicated inner wall part (internal face) and also can trap mist of oil efficiently.In addition, even if adopt mazy separator portion, blow-by gas also can not be lowered the temperature due to inner wall part (internal face), therefore can effectively prevent the water vapour in the blow-by gas circulated in separator portion from condensing.

In internal-combustion engine in the above-mentioned 1st, preferred separator portion comprises for importing the introducing port of blow-by gas from cylinder block, the sealing component in the part near the introducing port also possessing hermetic separator portion and the gap between cylinder block.According to this formation, can prevent the part for the blow-by gas importing separator portion from invading (spilling) space (gap) to the cylinder block and subsidiary engine mounting structure that encase separator portion from outside from the part near introducing port.Therefore, can prevent the oil in blow-by gas from invalidly accumulating in the space encasing separator portion from outside (part in the gap of the outer surface in cylinder block and subsidiary engine mounting structure and separator portion).

In internal-combustion engine in the above-mentioned 1st, preferred separator portion is to have the state configuration in gap relative to both subsidiary engine mounting structure and cylinder block, gap forms thermal-protective coating, and thermal-protective coating comprises air layer, and thermal-protective coating is communicated with the inside of cylinder block.According to this formation, the thermal-protective coating (air layer) be communicated with the inside of crankshaft room can be utilized to encase the separator portion in the space be configured between cylinder block and subsidiary engine mounting structure.Now, the gas of the inside of crankshaft room is heated by blow-by gas, the motor wet goods accumulated in oil storage portion, and therefore separator portion is encased by the gas of this high temperature (gas).Therefore, after internal combustion engine start, the heat insulating ability in separator portion easily can be maintained.

In internal-combustion engine in the above-mentioned 1st, preferred subsidiary engine mounting structure comprises cooling water path, and separator portion is configured near the cooling water path of subsidiary engine mounting structure.According to this formation, after internal combustion engine start, the heat transfer of the cooling water (high-temperature water) after fully being heated by internal-combustion engine can be made to heat to separator portion (inner space) to separator portion.Therefore, after utilizing the heat of cooling water once to heat to separator portion, also heat insulating ability can be maintained in the separator portion being configured at the space between cylinder block and subsidiary engine mounting structure, even if therefore subsidiary engine mounting structure is exposed in the outside air of low temperature the blow-by gas maintenance set point of temperature that also can make to circulate in separator portion.At this, " cooling water path " of the present invention is not only included in the situation of the path of cooling water circulation when common water being used for cooling water, also comprising antifreezing solution, the situation of antifreeze liquid (cooling liquid) as the path of this cooling liquid circulation when cooling water being mixed with antirust, the corrosion inhibitor for preventing the metal parts of cooling system from corroding, is concept widely.

In internal-combustion engine in the above-mentioned 1st, preferred above-mentioned cooling water path configures in not outstanding to above-mentioned separator portion mode.According to this formation, the inner space of cooling water path not to separator portion is outstanding, but near the outside being configured in separator portion (inner space), therefore by the impact of the configuration of cooling water path, cyclone separator arrangement can not be set in the inner space in separator portion that fully ensure that internal volume.

In internal-combustion engine in the above-mentioned 1st, preferred separator portion comprises: introducing port, and it is for importing blow-by gas from cylinder block; Wall portion, it is located at the dead astern of introducing port, for colliding for the blow-by gas imported by introducing port; And stockpiling space, it is located at the dead astern of wall portion, stockpiles and collides the blow-by gas after wall portion.According to this formation, the blow-by gas imported in separator portion by introducing port can be made constantly to collide wall portion, effectively can be separated the particulate mist of oil (oil droplet) comprised in blow-by gas.Further, make the blow-by gas after collision to stockpile in space diffusion and reduce flow velocity and remain in this and stockpile space, mist of oil can be separated further thus.Thus, the function in the separator portion of separating oil can be improved.

In this case, preferred separator portion also comprises the oily exhaust port of elongate shape, and oily exhaust port extends at above-below direction, for discharging the oil in the blow-by gas that stockpiles and stockpile in space.According to this formation, to be separated in wall portion in space and the liquid oil that falls (dripping) is suitably discharged to the outside (in cylinder block) by the oily exhaust port of elongate shape with stockpiling.Now, oil is mainly the cross section outflow of the lower side the oily exhaust port of elongate shape from cross section, on the other hand, the access (aperture portion of blowing air) that will stockpile space and be communicated with outside (in cylinder block) can be produced in the cross section of upper side in oily exhaust port, therefore stockpiling in space, the air in the oil of discharge and crankshaft room is by oily exhaust port fast exchange.Consequently, the sticking liquid oil of tool can be made to discharge from oily exhaust port rapidly.In addition, liquid oil can not be retained and always guarantee to have the space that stockpiles of fixed space volume, therefore easily can maintain the function in separator portion.

The cyclone separator arrangement of the internal-combustion engine of the 2nd aspect of the present invention possesses separator portion, separator portion is configured at the space between cylinder block and subsidiary engine mounting structure, and independently arrange relative to cylinder block and subsidiary engine mounting structure, for carrying out gas-liquid separation to blow-by gas, subsidiary engine mounting structure is configured at the sidewall of cylinder block, and subsidiary engine is assemblied in subsidiary engine mounting structure.

In the cyclone separator arrangement of the internal-combustion engine in the of the present invention 2nd, as mentioned above, possesses separator portion, it is configured at the space between cylinder block and subsidiary engine mounting structure, and independently arrange relative to cylinder block and subsidiary engine mounting structure, gap portion between subsidiary engine mounting structure and separator portion and the gap portion between cylinder block and separator portion can be used as thermal-protective coating together thus, the separator portion independent (individual components) formed carries out heat isolation relative to the cylinder block and subsidiary engine mounting structure that are directly exposed to outside air.Namely, separator portion separates gap portion (thermal-protective coating) and heat insulation, be not easy the impact being directly subject to external air temperature thus, therefore when internal-combustion engine stops being placed in the low environment of external air temperature, when when also having internal combustion engine start, the cooling water temperature of the internal-combustion engine such as (just start after) does not fully heat up, the temperature in control separation device portion reduces.Thus, the heat insulating ability in separator portion can be maintained, effectively can seek the condensation of the water vapour in the blow-by gas preventing from circulating in separator portion, consequently, can avoid being mixed into water of condensation in the oil reclaimed by separator portion.

In addition, in the cyclone separator arrangement of the internal-combustion engine in the above-mentioned 2nd, separator portion is provided with relative to cylinder block and subsidiary engine mounting structure independent (individual components), be not limited to the oily separate mode (such as inertial collision formula, mazy type and vortex type etc.) from blow-by gas, oil being carried out gas-liquid separation thus, cyclone separator arrangement of the present invention can be applied to internal-combustion engine.According to the design pattern of internal-combustion engine, different to the oily trapping ability (feature on the design pattern in separator portion) required by separator portion, but no matter the separator portion with which kind of oily separate mode is loaded internal-combustion engine, effectively can be sought the condensation of the water vapour prevented in blow-by gas by the insulation in separator portion, can avoid being mixed into water of condensation in the oil after gas-liquid separation.Due to this point, serviceability of the present invention is high.

In addition, in this application, also following formation can be considered in the internal-combustion engine in the above-mentioned 1st.

(notes area 1)

That is, in the internal-combustion engine in the above-mentioned 1st, separator portion is formed from a resin.According to this formation, not only the gap portion between subsidiary engine mounting structure and separator portion and the gap portion between cylinder block and separator portion are used as thermal-protective coating, the effect of heat insulation (heat-shielding performance) of the resin material that separator portion also can be utilized self to have, makes separator portion more not be vulnerable to the impact of external air temperature.In addition, in manufacturing process, such as, integrally can turn to being divided into two-part separator member 1 separator portion each other by Vibration Welding etc. and easily manufacture.Now, the shape (labyrinth structure etc.) making the internal structure of each separator member be formed as desired by ester moulding, therefore can will guarantee heat insulating ability and have high performance oily separation function separator portion load internal-combustion engine.In addition, separator portion is formed from a resin, and also correspondingly can seek light.

(notes area 2)

In addition, in the internal-combustion engine in the above-mentioned 1st, wall portion has the surface of concaveconvex shape.According to this formation, produce on the surface of wall portion and rise and fall (concaveconvex shape), blow-by gas can be made correspondingly to collide with the more multi-surface of wall portion, the particulate mist of oil that the surface portion of concaveconvex shape therefore can be utilized to trap efficiently contain in blow-by gas.

(notes area 3)

In addition, in the internal-combustion engine in the above-mentioned 1st, wall portion has the surface of the shape tilted to the direction easily making collision arrive the blow-by gas trend below of wall portion.According to this formation, easily the blow-by gas guiding after colliding can be formed at and stockpile space below introducing port, therefore stockpile to upper layer side from lower layer side stockpiling blow-by gas in space, blow-by gas correspondingly can be made to reside at the longer time and stockpile space.Thus, mist of oil fully can be separated stockpiling in space.

invention effect

According to the present invention, as mentioned above, provide the water vapour in the blow-by gas that can prevent from circulating in separator portion to condense to avoid in the oil reclaimed by separator portion, being mixed into the internal-combustion engine of water of condensation and the cyclone separator arrangement of internal-combustion engine.

Accompanying drawing explanation

Fig. 1 is the schematically overall stereogram formed of the motor that the 1st mode of execution of the present invention is shown.

Fig. 2 is the sectional view of the internal structure in separator portion observing from engine front side direction rear in the motor that the 1st mode of execution of the present invention is shown.

Fig. 3 is the figure of internal structure being assemblied in the unilateral observation of the sidewall of cylinder block from subsidiary engine bracket in the motor that the 1st mode of execution of the present invention is shown.

Fig. 4 is the sectional view of the internal structure in separator portion observing from engine front side direction rear in the motor that the 2nd mode of execution of the present invention is shown.

Fig. 5 is the sectional view of the internal structure in separator portion observing from engine front side direction rear in the motor that the 3rd mode of execution of the present invention is shown.

Fig. 6 is the sectional view of the internal structure in separator portion observing from engine front side direction rear in the motor that the 4th mode of execution of the present invention is shown.

Fig. 7 is the sectional view of the internal structure in separator portion observing from engine front side direction rear in the motor that the 5th mode of execution of the present invention is shown.

Fig. 8 is the sectional view of the internal structure of the separator portion monomer illustrated along the 550-550 line in Fig. 7.

Fig. 9 is the enlarged view of the structure near the oily exhaust port in the separator portion of the motor that the 5th mode of execution of the present invention is shown.

description of reference numerals

2,202,302: cylinder block

2c, 202c, 302c: sidewall

2d, 5d, 302d: recess

3: crankcase

4,204,304: space portion (space)

5: subsidiary engine bracket (subsidiary engine mounting structure)

6,206,306,406,506: separator portion

6a, 306a, 406a, 506a: entrance part (introducing port)

6f, 206f, 306f, 506j: outer surface

7,351,352: sealing component

8: cooling water path

8a: flow path portion (cooling water path)

70: water pump (subsidiary engine)

100,200,300,400,500: motor (internal-combustion engine)

202d: inner wall part

202e: opening portion

401: filter component

501: stockpile space

506d: wall portion

506h: oily exhaust port

S, T, U: gap

Embodiment

Below, with reference to the accompanying drawings embodiments of the present invention are described.

(the 1st mode of execution)

First, the formation of the motor 100 of the 1st mode of execution of the present invention is described with reference to Fig. 1 ~ Fig. 3.In addition, in FIG, to the main composition element annotation reference character of motor 100, and in figs. 2 and 3, to the detailed construction mark reference character near cylinder block 2 and subsidiary engine bracket 5.In addition, to divide into the bearing of trend of bent axle 40 for X-direction, the direction orthogonal with bent axle 40 is Y-direction, and the bearing of trend of cylinder 2a is that Z-direction (above-below direction) is described.

As shown in Figure 1, the motor 100 of the automobile of the 1st mode of execution of the present invention possesses the engine main body 10 of the aluminum alloy comprising cylinder head 1, cylinder block 2 and crankcase 3.In addition, the motor 100 comprising petrol engine possesses: the chain guard 20 being assembled in the side end of the X2 side of engine main body 10; And be assembled in the valve mechanism cover 30 of upside (Z1 side) of cylinder head 1.In addition, motor 100 is examples of " internal-combustion engine " of the present invention.

In the inside of cylinder head 1, be configured with camshaft and valve system (not shown) etc.Be formed in the inside of the cylinder block 2 be connected with the below (Z2 side) of cylinder head 1: piston 11 (with reference to Fig. 2) is reciprocating cylinder 2a (with reference to Fig. 2) in z-direction; And water jacket 2d, it surrounds cylinder 2a across next door and circulates for the cooling water (cooling liquid (antifreeze liquid)) for cooling cylinder 2a.In addition, be connected with in a side side (Y2 side) of cylinder head 1 air inlet system (not shown) the multiple cylinder 2a being formed at cylinder block 2 being imported respectively to gas.

In addition, the crankcase 3 utilizing cylinder block 2 and be connected with the below (Z2 side) of cylinder block 2, is formed with crankshaft room 3a at the inner bottom part of engine main body 10.In addition, in crankshaft room 3a, be configured with the bent axle 40 that can be connected rotatably around X-axis with connecting rod 12 (with reference to Fig. 2) by piston 11 (with reference to Fig. 2).In addition, in FIG, be bar-shaped by bent axle 40 schematic diagram, but the crank pin 41 (with reference to Fig. 2) that in fact, running shaft is biased by bent axle 40 immediately below each cylinder 2a is connected with the crank journal 43 (with reference to Fig. 2) of the counterweight 42 (with reference to Fig. 2) clipping this crank pin 41 in the axial direction and forms.In addition, the oil storage portion 3b of accumulation engine oil (hereinafter referred to as " oil ") is provided with in the bottom (Z2 side) of crankshaft room 3a.Oil to be drawn into the top in engine main body 10 from oil storage portion 3b by not shown oil pump, after lubricating, utilize deadweight fall and return oil storage portion 3b to slide parts such as the outer circumferential faces of the air valve system timing components (not shown) such as camshaft, piston 11.

In addition, as shown in Figure 1, motor 100 possesses subsidiary engine bracket 5.The subsidiary engine bracket 5 of aluminum alloy has: the cylinder block department of assembly 5a being formed with multiple fixed hole (through hole) 5b in the outer edge of main part 50a; And water pump department of assembly 5c, it comprises the fixed hole 5w (such as tapped hole) water pump 70 of the cooling water circulation as subsidiary engine class being fixed on motor 100.At this, the cylinder block department of assembly 5a being configured at X-Z plane and the water pump department of assembly 5c being configured at Y-Z plane is mutually orthogonal.In addition, subsidiary engine bracket 5 is examples of " subsidiary engine mounting structure " of the present invention.In addition, water pump 70 is examples of " subsidiary engine " of the present invention.

In subsidiary engine bracket 5, being anchored on cylinder block 2 making, under the cylinder block department of assembly 5a state relative with cylinder block 2, bolt 91 is inserted through fixed hole 5b, thus subsidiary engine bracket 5 being assemblied in the assigned position of sidewall 2c across sealing component 14 (with reference to Fig. 2).In addition, water pump 70 has multiple pilot hole (through hole) 72 in department of assembly 71.Further, bolt 92 is inserted into the pilot hole 72 of department of assembly 71, is anchored in the fixed hole 5w of the water pump department of assembly 5c being arranged on subsidiary engine bracket 5, thus water pump 70 is assemblied in water pump department of assembly 5c across the sealing components such as metal washer 15.At this, as shown in Figure 3, water pump 70 can be formed in the mode of the internal rotating of housing 73 with impeller 74 (represented by dashed line).Further, the belt wheel 75 being located at the outside of housing 73 to rotate thus impeller 74 rotates and plays pumping function to prescribed direction.In addition, as shown in Figure 2, subsidiary engine bracket 5, except for except station pump 70, is also fixed on the side portion of the Y2 side of engine main body 10 for other subsidiary engine classes such as the compressors (compressor) by idle call in not shown alternator (electricity generating device) and car.

As shown in Figure 2, the sidewall 2c of cylinder block 2 has on the surface of Y2 side with the recess 2d of concavity depression.In addition, the cylinder block department of assembly 5a of subsidiary engine bracket 5 has the recess 5d caved in concavity on the surface of the Y1 side relative with sidewall 2c.Further, subsidiary engine bracket 5 is configured to be assemblied in cylinder block 2 under the state respect to one another of respective outer edge in opposite directions at the recess 2d of the recess 5d and sidewall 2c that make cylinder block department of assembly 5a.In addition, the sealing components such as metal washer 14 are configured with at the fitting surface of cylinder block 2 and subsidiary engine bracket 5.

At this, in the 1st mode of execution, as shown in Figure 2, under being configured to the state being assemblied in cylinder block 2 at subsidiary engine bracket 5, between the recess 2d and the recess 5d of cylinder block department of assembly 5a of sidewall 2c, form the space portion 4 with regulation shape.Further, the space portion 4 between cylinder block 2 and subsidiary engine bracket 5 is embedded with the separator portion 6 as individual components.In addition, separator portion 6 has function of blow-by gas being carried out to gas-liquid separation described later.In addition, space portion 4 is examples in " space " of the present invention.

Resinous separator portion 6 has: be located at the entrance part 6a of lower side (Z2 side), the export department 6b of (Z1 side) and the main part 6c that is formed between entrance part 6a and export department 6b that is located at upper side.In addition, the main part 6c with hollow structure has the complicated internal face 6d of band concaveconvex shape.In addition, about separator portion 6, manufacturing process to be main part 6c be divided into two-part separator member by up and down or left and right is fabricated to 1 separator portion 6 each other by integrations such as Vibration Welding.At this, under the state being equipped with subsidiary engine bracket 5 in cylinder block 2, be provided with in space portion 4: by the breakthrough part 4a of the sidewall portion 3c on top of the through crankcase 3 of L-shaped and the bottom of the sidewall 2c of cylinder block 2; And from recess 5d side along the breakthrough part 4b of through outside, Y2 direction in the cylinder block department of assembly 5a of subsidiary engine bracket 5.Further, separator portion 6 inserts the part extended along the Z direction of breakthrough part 4a with entrance part 6a and the mode that export department 6b inserts the breakthrough part 4b extended along the Y direction is incorporated in space portion 4.In addition, entrance part 6a is an example of " introducing port " of the present invention.

Now, in the 1st mode of execution, under the state that separator portion 6 is configured at space portion 4, between the outer surface 6f and the internal face 4d of space portion 4 of main part 6c, be provided with the gap S comprising air layer.In this case, gap S is arranged in the mode making the outer surface 6f of main part 6c and be at least separated to the inside relative to the internal face (the internal face 4d of space portion 4) of the recess 5d of subsidiary engine bracket 5.In addition, gap S extends from the recess 5d side direction recess 2d of cylinder block 2 in the upside of main part 6c.Therefore, the outer surface 6f of relative with the internal face (the internal face 4d of space portion 4) of the recess 2d of cylinder block 2 bottom main part 6c from recess 2d to the inside (lower direction) be separated across gap S.In addition, gap S also extends from the recess 2d of the recess 5d side direction cylinder block 2 of subsidiary engine bracket 5 in the downside of main part 6c.Therefore, the outer surface 6f of relative with the internal face (the internal face 4d of space portion 4) of the recess 2d on cylinder block 2 top main part 6c from recess 2d to the inside (direction) be separated across gap S.

In addition, as shown in Figure 3, main part 6c be configured to outer surface 6f relative to be formed at space portion 4 the internal face 4d (internal face of the X2 side of the recess 5d of subsidiary engine bracket 5) of end of X2 side separate gap S respectively with the internal face 4d (internal face of the X1 side of the recess 5d of subsidiary engine bracket 5) of end of the X1 side being formed at space portion 4 and be separated to the inside.Therefore, as shown in Figures 2 and 3, in space portion 4, the separator portion 6 with stero shape is configured to except the part except contacting with flow path portion 8a described later (cooling water path 8) with breakthrough part 4a, breakthrough part 4b, and the gap S that outer surface 6f is included air layer encases.In addition, thus, the temperature of suppression subsidiary engine bracket 5, cylinder block 2 is directly passed to the main part 6c in separator portion 6, maintains the heat insulating ability in separator portion 6.

In addition, in the 1st mode of execution, as shown in Figure 2, the sealing component 7 for sealing (seal) to the gap S between the part near the entrance part 6a in separator portion 6 and cylinder block 2 is provided with.The resilient material of sealing component 7 apparatus and have concurrently the rubber series (resin is made) of both water resistence and oil resistance material form.Therefore, sealing component 7 is utilized to prevent the blow-by gas, mist of oil etc. of crankcase 3 side from containing the environmental gas of moisture and oil content from the gap S between breakthrough part 4a intrusion space portion 4 and the outer surface 6f of main part 6c.On the other hand, sealing component is not provided with between the part near the export department 6b in separator portion 6 and the breakthrough part 4b of subsidiary engine bracket 5.In addition, connected by the pipeline (hose member) of sealing component 9 with the export department 6b and Pcv valve 81 that are connected separator portion 6, prevent the blow-by gas circulated at export department 6b from escaping to outside.

In motor 100, the blow-by gas (unburned mixed gas) being configured to spill from the gap of the internal face of cylinder (cylinder liner) 2a and piston ring 13 to the crankcase 3 (crankshaft room 3a) of cylinder 2a bottom is imported the gas handling system 80 sucking air to cylinder 2a again.More particularly, in engine main body 10, be provided with the stream of the blow-by gas that PCV (Positive Crankcase Ventilation: the positive crankcase ventilation (PCV)) valve 81 that makes crankcase 3 and be connected with gas handling system 80 is communicated with, separator portion 6 forms a part for the stream of this blow-by gas.In this case, crankcase 3 side is communicated with by entrance part 6a with separator portion 6, and Pcv valve 81 side described later is communicated with by export department 6b with separator portion 6.

In addition, the internal face 6d of main part 6c has the outstanding wall portion 6e of multiple (4) tabular.Each outstanding wall portion 6e extends along horizontal plane (X-Y plane), and respectively from the internal face 6d of the internal face 6d of Y1 side and Y2 side along substantially horizontal (Y1 direction and Y2 direction) interlaced give prominence to.In addition, to separate predetermined distance in z-direction overlapped for the central part of the tip portion of each outstanding wall portion 6e in the Y-direction of main part 6c.Thus, separator portion 6 defines labyrinth structure in inside.Therefore, the blow-by gas being configured to spill to crankcase 3 (crankshaft room 3a) circulates from the lower side corresponding with entrance part 6a to the upper side corresponding with export department 6b and after the Pcv valve 81 that leads, imports gas handling system 80 in the separator portion 6 with labyrinth structure.

In addition, in containing the blow-by gas of hydrocarbon, the mist of oil produced in crankshaft room 3a is mixed with.Therefore, as shown in Figure 2, when blow-by gas is by separator portion 6, from being stranded in from entrance part 6a to the flow path length of export department 6b owing to having the internal face 6d of multiple outstanding wall portion 6e and the mist of oil of trap particles shape efficiently the blow-by gas of the inner space in separator portion 6 of back and forth elongating to serpentine shape.In addition, be configured to utilize the inertial collision of the internal face 6d to the complicated main part 6c with concaveconvex shape (outstanding wall portion 6e), from blow-by gas, oil is carried out gas-liquid separation.In addition, gas-liquid separation and the oil that becomes drop drops to crankcase 3 (oil storage portion 3b (with reference to Fig. 1)) naturally from the entrance part 6a (breakthrough part 4a) of the bottom being formed at separator portion 6.

Therefore, the blow-by gas stream escaping to crankcase 3 (crankshaft room 3a), is being discharged from the export department 6b on top to Pcv valve 81 side after repeatedly colliding internal face 6d (outstanding wall portion 6e) delay in main part 6c by flowing into separator portion 6 shown in arrow P from the entrance part 6a of bottom.In addition, the blow-by gas of oil having been carried out gas-liquid separation is directed to Pcv valve 81 and is back in gas handling system 80.

In addition, under being configured to the state being assembled in cylinder block 2 at subsidiary engine bracket 5, in engine main body 10, be formed with the cooling water path 8 with regulation layout.

As shown in Figures 2 and 3, cooling water path 8 comprises: the flow path portion 8a extended to X2 direction in subsidiary engine bracket 5; (roughly arrow Z1 direction) flow path portion 8b (with reference to Fig. 3) of extending obliquely upward in subsidiary engine bracket 5; To be connected with flow path portion 8b and to the flow path portion 8c that X1 direction extends in subsidiary engine bracket 5; And the flow path portion 8d being connected with flow path portion 8c and extending to Y-direction in subsidiary engine bracket 5 and cylinder block 2.In this case, cooling water path 8 along the direction that cooling water (cooling liquid (antifreeze liquid)) flows by flow path portion 8a, water pump 70 (with reference to Fig. 3), being linked in sequence of flow path portion 8b, flow path portion 8c and flow path portion 8d.In addition, as shown in Figure 2, flow path portion 8d is connected with near the underpart of water jacket 2d in the inside of cylinder block 2, and flow path portion 8d also doubles as a part of water jacket 2d.In addition, flow path portion 8a is an example of " cooling water path " of the present invention.

At this, the flowing of cooling water (cooling liquid) is described.When motor 100 (with reference to Fig. 1) is stably driven, utilize the cooling water (cooling liquid) after not shown radiator cooling by flowing in the flow path portion 8a of arrow X2 direction in the subsidiary engine bracket 5 be connected with the pipeline (hose member) extended from radiator and being inhaled into water pump 70.After the flow path portion 8b of the cooling water sprayed by water pump 70 in subsidiary engine bracket 5 flows to oblique upper (roughly arrow Z1 direction) in (with reference to Fig. 1), the flowing of arrow X1 direction is pressed at flow path portion 8c, in flow path portion 8d, press the flowing of arrow Y1 direction again, flow to water jacket 2d.Further, the cooling water receiving the heat of cylinder head 1 and cylinder block 2 is discharged from cylinder head 1, and it is cooled to return radiator.Like this, the cooling water path 8 comprising flow path portion 8a ~ 8d bears a part for the stream for cooling air cylinder cap 1 and cylinder block 2 when motor 100 is stably driven.

In addition, the effect heated in the inside that the cooling water path 8 in subsidiary engine bracket 5 has separator portion 6 built-in in motor 100 just startup utilizes the heat of the cooling water after being heated by motor 100 to engine main body 10 afterwards.In this case, be configured to by driving not shown flow channel switching valve to make the cooling water discharged from cylinder head 1 and cylinder block 2 be back to the flow path portion 8a in subsidiary engine bracket 5 without radiator (not being cooled).Thus, after motor 100 just starts, the inside of heat to separator portion 6 of the cooling water after being heated by motor 100 is utilized to heat efficiently.In addition, produce after just starting thus and heated by the blow-by gas in separator portion 6.Therefore, the water vapor component that suppresses to comprise in the blow-by gas partial coagulation at the cold internal face 6d of main part 6c is configured to.

At this, in the 1st mode of execution, configure with the outer surface 6f of the mode in the outside close to separator portion 6 along main part 6c for the flow path portion 8a heated to separator portion 6.In this case, a part of the wall portion of the flow path portion 8a of subsidiary engine bracket 5 and the outer surface 6f of main part 6c contacts with each other.In addition, flow path portion 8a is configured in the side being provided with the bottom (Z2 side) of the entrance part 6a in separator portion 6 in main part 6c.That is, circulation just heated by motor 100 after the flow path portion 8a of cooling water of relatively-high temperature be configured in the bottom (Z2 side) in separator portion 6.Thus, be constructed so that the water vapour just contained from the blow-by gas of entrance part 6a inflow is not easy condensation.

In addition, as shown in Figure 1, in the inside of chain guard 20, the cam shaft timing chain wheel (not shown) of the camshaft actuated of the crankshaft timing sprocket (not shown) being assemblied in bent axle 40 and the inside loading cylinder head 1 is connected by timing chain (not shown).In addition, in the outside of chain guard 20, be equipped with crank pulley (not shown) rotationally at the front end 40a of bent axle 40.Further, the driving belt that the subsidiary engine class such as compressor of idle call in water pump 70, car is driven by crank pulley drives.In addition, the rearward end 40b of bent axle 40 is connected with the power transfering part (not shown) comprising speed changer etc.Structure near the subsidiary engine bracket 5 of the motor 100 in the 1st mode of execution is formed as described above.

In the 1st mode of execution, following effect can be obtained.

Namely, in the 1st mode of execution, as mentioned above, possesses separator portion 6, separator portion 6 is configured at the space portion 4 between cylinder block 2 and subsidiary engine bracket 5, and relative to cylinder block 2 and the independent setting of subsidiary engine bracket 5, thermal-protective coating can be used as by together with the gap S between subsidiary engine bracket 5 with separator portion 6 and the gap S between cylinder block 2 with separator portion 6 thus, independent (individual components) separator portion 6 of forming is carried out heat relative to the sidewall 2c of cylinder block 2 and subsidiary engine bracket 5 that are directly exposed to outside air and isolates.Namely, separator portion 6 separates gap S as thermal-protective coating and heat insulation, be not easy the impact being directly subject to external air temperature thus, therefore when motor 100 stops being placed in the low environment of external air temperature, when also having motor 100 cooling water temperature that (after just starting) etc. circulates in water jacket 2d when starting fully not heat up, also can the temperature in control separation device portion 6 reduce.Thus, maintain the heat insulating ability in separator portion 6, therefore effectively can seek the water vapour condensation prevented in the blow-by gas of circulation in separator portion 6.Consequently, can avoid being mixed into water of condensation in the oil that reclaimed by separator portion 6.

In addition, in the 1st mode of execution, be provided with separator portion 6 relative to cylinder block 2 and subsidiary engine bracket 5 independent (individual components), be not limited to oily separate mode blow-by gas being carried out to gas-liquid separation thus, mazy separator portion 6 easily can be loaded engine main body 10.In addition, according to the design pattern of motor 100, different to the oily trapping ability (feature on the design pattern in separator portion 6) required by separator portion 6, but except comprising mazy separator portion 6, such as namely be used in the separator member with arbitrary oily separate modes such as inertial collision formula, vortex type described later and filtering types, also effectively can realize preventing the water vapour in blow-by gas from condensing by the insulation of separator member, can avoid being mixed into water of condensation in the oil after gas-liquid separation.

In addition, in the 1st mode of execution, separator portion 6 is so that the gap S of the state have to(for) subsidiary engine bracket 5 of looking younger is configured at the space portion 4 between cylinder block 2 and subsidiary engine bracket 5.Thus, separate gap S relative to the subsidiary engine bracket 5 being easily directly subject to the impact of external air temperature without heating source etc. in space portion 4, configure separator portion 6, even if therefore under the state of subsidiary engine bracket 5 cooling due to outside air, this gap S also can play the effect of thermal-protective coating, the temperature making subsidiary engine bracket 5 not easily directly heat transfer to the separator portion 6 of space portion 4.Thus, effectively can maintain the heat insulating ability of the 6 pairs of external air temperatures in separator portion, therefore can reliably seek to prevent the water vapour in the blow-by gas of circulation in separator portion 6 from condensing due to external air temperature.

In addition, in the 1st mode of execution, separator portion 6 is configured at the space portion 4 between cylinder block 2 and subsidiary engine bracket 5 with the state both subsidiary engine bracket 5 and cylinder block 2 to gap S.Thus, not only relative to the subsidiary engine bracket 5 of impact being easily subject to external air temperature, also separate gap S relative to cylinder block 2 and configure separator portion 6, therefore under the cooling water temperature circulated in water jacket 2d when motor 100 starts etc. is not warmed up to the low-temperature condition of set point of temperature, also the gap S arranged both subsidiary engine bracket 5 and cylinder block 2 can be utilized to obtain effect of heat insulation (heat-shielding performance), reliably can be incubated and maintain the separator portion 6 of space portion 4.Therefore, the water vapour in the blow-by gas of circulation in separator portion 6 after particularly reliably preventing motor 100 just cold start-up condenses.

In addition, in the 1st mode of execution, in separator portion 6 and the gap S at least between subsidiary engine bracket 5, be provided with the thermal-protective coating comprising air layer.Thus, utilize the thermal-protective coating comprising air layer of the gap S be located between separator portion 6 and subsidiary engine bracket 5, even if the effect of heat insulation (heat-shielding performance) to subsidiary engine bracket 5 also can be obtained under the state that subsidiary engine bracket 5 is lowered the temperature, the separator portion 6 of space portion 4 can be made reliably to be incubated.In addition, thermal-protective coating adopts air layer, do not use the special material playing effect of heat insulation (heat-shielding performance) only air layer to be used as thermal-protective coating to form thermal-protective coating thus, thus separator portion 6 and the gap S at least between subsidiary engine bracket 5 can be made easily to play heat-shielding performance.

In addition, in the 1st mode of execution, adopt the multiple outstanding wall portion 6e that utilizes and give prominence to from internal face 6d and there is in inside mazy separator portion 6 of labyrinth structure.Thus, the inner space in separator portion 6 is labyrinth structure, therefore blow-by gas can be made to be stranded in and to be formed by internal face 6d (comprising the internal face 6d of multiple outstanding wall portion 6e) and from entrance part 6a to the inner space in the separator portion 6 that the flow path length of export department 6b extends with reciprocal serpentine shape, the particulate mist of oil comprised in blow-by gas can be trapped efficiently.In addition, in the process of blow-by gas circulation, make mist of oil repeatedly collide complicated internal face 6d (comprising the internal face 6d of multiple outstanding wall portion 6e), also can trap mist of oil efficiently thus.In addition, even if adopt mazy separator portion 6, blow-by gas also can not be lowered the temperature due to internal face 6d (comprising the internal face 6d of multiple outstanding wall portion 6e), therefore effectively can prevent the water vapour condensation in the blow-by gas of circulation in separator portion 6.

In addition, in the 1st mode of execution, separator portion 6 comprises the entrance part 6a for importing blow-by gas from cylinder block 2, is also provided with the sealing component 7 of the gap S between part near for the entrance part 6a in hermetic separator portion 6 and cylinder block 2.Thus, can prevent the part for the blow-by gas importing separator portion 6 from escaping to the cylinder block 2 of the outer surface 6f encasing separator portion 6 from outside and the gap S (air layer space portion 4) between subsidiary engine bracket 5 and outer surface 6f from the part near entrance part 6a.Therefore, can prevent the oil in blow-by gas from invalidly accumulating in this gap S.

In addition, in the 1st mode of execution, subsidiary engine bracket 5 comprises cooling water path 8, near the cooling water path 8 separator portion 6 being configured in subsidiary engine bracket 5.Thus, after motor 100 starts, the heat transfer of the cooling water (high-temperature water) after fully being heated by motor 100 can be made to heat to the inner space in separator portion 6 to separator portion 6.Therefore, after utilizing the heat of cooling water once to heat to separator portion 6, also heat insulating ability can be maintained in the separator portion 6 of the space portion 4 be configured between cylinder block 2 and subsidiary engine bracket 5, even if therefore subsidiary engine bracket 5 is exposed to the outside air of low temperature, the blow-by gas of circulation in separator portion 6 also can be made to maintain set point of temperature.

In addition, in the 1st mode of execution, separator portion 6 is formed from a resin.Thus, not only the gap S between subsidiary engine bracket 5 and separator the portion 6 and gap S between cylinder block 2 and separator portion 6 is used as thermal-protective coating together, the effect of heat insulation (heat-shielding performance) of the resin material that separator portion 6 also can be utilized self to have, makes separator portion 6 more not be vulnerable to the impact of external air temperature.In addition, in manufacturing process, such as, integrally can turn to being divided into two-part separator member 1 separator portion 6 each other by Vibration Welding etc. and easily manufacture.Now, make the internal structure of each separator member (comprising the internal face 6d of multiple outstanding wall portion 6e) be formed as desired shape (labyrinth structure) by ester moulding, therefore can will guarantee heat insulating ability and the separator portion 6 with high performance oily separation function loads motor 100.In addition, separator portion 6 is formed from a resin, and also correspondingly can seek light.

(the 2nd mode of execution)

Next, with reference to Fig. 2 and Fig. 4, the 2nd mode of execution is described.In the 2nd mode of execution, different from above-mentioned 1st mode of execution, illustrate that the mode exposed to the inside (crankshaft room 3a) of cylinder block 202 with the outer surface 206f in separator portion 206 arranges the example in separator portion 206.In addition, in the drawings, to the formation same with above-mentioned 1st mode of execution, the mark reference character identical with the 1st mode of execution illustrates.

As shown in Figure 4, in the motor 200 of the 2nd mode of execution of the present invention, subsidiary engine bracket 5 is assemblied in the sidewall 202c of cylinder block 202 across sealing component 14.In addition, at the inner wall part 202d of the sidewall 202c of the cylinder block 202 of assembling subsidiary engine bracket 5, in sidewall 202c, the opening portion 202e penetrating into crankshaft room 3a is formed with.In addition, inner wall part 202d forms the surface in the outside of cylinder block 202, but forms the internal face 204d of space portion 204 described later at this, is called " inner wall part " by this meaning.In addition, the opening portion 202e of inner wall part 202d has larger opening area.Further, subsidiary engine bracket 5 with the opening portion 202e (inner wall part 202d) of the recess 5d and sidewall 202c that make cylinder block department of assembly 5a in opposite directions and respective outer edge state against each other is assemblied in cylinder block 202.In addition, motor 200 is examples of " internal-combustion engine " of the present invention.

At this, in the 2nd mode of execution, under being configured to the state being assemblied in cylinder block 202 at subsidiary engine bracket 5, between the inner wall part 202d (opening portion 202e) and the recess 5d of cylinder block department of assembly 5a of sidewall 202c, be formed with the space portion 204 with regulation shape.In addition, space portion 204 is communicated with the crankshaft room 3a of the inside as cylinder block 202 by opening portion 202e.Further, in this space portion 204, be configured with the resinous separator portion 206 as individual components.In addition, space portion 204 is examples in " space " of the present invention.

Separator portion 206 has the entrance part 206a being located at lower side, the export department 206b being located at upper side and main part 206c.In addition, main part 206c has the internal face 206d in inside with labyrinth structure.In addition, it is relative with crankshaft room 3a by opening portion 202e that separator portion 206 is arranged to entrance part 206a, and insert the mode embedded space portion 204 of through hole 204b with export department 206b.

In addition, the export department 206b in separator portion 206 embeds the through hole 204b of subsidiary engine bracket 5 across sealing component 209.In addition, sealing component 209 uses band flexible and possesses the material formation of the rubber series (resin-made) of oil resistance.Therefore, sealing component 209 is utilized to prevent the environmental gas of crankcase 3 side (blow-by gas, mist of oil etc.) from escaping to the outside of subsidiary engine bracket 5 from through hole 204b.

Thus, in the 2nd mode of execution, under the state that separator portion 206 is configured at space portion 204, also between the outer surface 206f and the internal face 204d of space portion 204 of main part 206c, be provided with the gap T comprising air layer.In this case, the mode be separated to the inside relative to the internal face of the recess 5d of subsidiary engine bracket 5 with the outer surface 206f of main part 206c is provided with gap T.In addition, gap T extends along the inner wall part 202d of cylinder block 202 to opening portion 202e along the above-below direction (Z-direction) of main part 206c and each outer surface 206f of fore-and-aft direction (X-direction) from the recess 5d side of subsidiary engine bracket 5.Therefore, in space portion 204, the separator portion 206 being configured to have stero shape is except the part contacted with flow path portion 8a (cooling water path 8) with breakthrough part 204a, breakthrough part 204b, and the gap T that outer surface 206f is included air layer encases.

In addition, in the 2nd mode of execution, the thermal-protective coating comprising air layer forming gap T is communicated with crankshaft room 3a by the opening portion 202e of cylinder block 202.Thus, be configured to after motor 200 starts, the blow-by gas escaping to the high temperature of crankshaft room 3a from cylinder 2a bottom is not only full of crankshaft room 3a, is also full of gap T by opening portion 202e.In addition, separator portion 206 is encased by the blow-by gas of the high temperature being full of gap T.

In addition, under the state that separator portion 206 is encased by the blow-by gas of high temperature, blow-by gas from entrance part 206a by flowing into separator portion 206 shown in arrow P, after internal face 206d (outstanding wall portion 206e) being collided repeatedly in delay in main part 206c, discharge from the export department 206b on top to Pcv valve 81 side.

In addition, the internal face 206d of main part 206c has the outstanding wall portion 206e of multiple (4) tabular.In this case, each outstanding wall portion 206e extends along vertical surface (X-Z face), and respectively from the internal face 206d of Z1 side (above) and the internal face 206d (bottom surface) of Z2 side give prominence to along above-below direction (Z1 direction and Z2 direction) is interlaced.In addition, to separate predetermined distance in the Y direction overlapped for the central part of the tip portion of each outstanding wall portion 206e in the Z-direction of main part 206c.Thus, separator portion 206 forms labyrinth structure in inside.

In addition, in the 2nd mode of execution, configure with the outer surface 206f of the mode in the outside close to separator portion 206 along main part 206c for the flow path portion 8a heated to separator portion 206.In this case, a part of the wall portion of the flow path portion 8a of subsidiary engine bracket 5 and the outer surface 206f of main part 206c contacts with each other.In addition, flow path portion 8a is configured in the side of the bottom (Z2 side) of the entrance part 206a in the separator portion 206 that is provided with in main part 206c.In addition, other formation of the motor 200 of the 2nd mode of execution is same with above-mentioned 1st mode of execution.

In the 2nd mode of execution, following effect can be obtained.

That is, in the 2nd mode of execution, as mentioned above, separator portion 206 is to have the state configuration of the gap T being formed the thermal-protective coating comprising air layer for both subsidiary engine bracket 5 and cylinder block 202.Further, be provided with opening portion 202e at the inner wall part 202d of cylinder block 202, the crankshaft room 3a of the thermal-protective coating and the inside as cylinder block 202 comprising air layer is communicated with.Thus, the thermal-protective coating (air layer) be communicated with the crankshaft room 3a of the inside as cylinder block 202 can be utilized to encase the separator portion 206 of the space portion 204 be configured between cylinder block 202 and subsidiary engine bracket 5.Now, the gas of crankshaft room 3a inside by blow-by gas, accumulate the motor wet goods in oil storage portion 3b and heat, therefore create the high gas of blow-by gas equitemperature (gas), thus separator portion 206 is encased by the gas of this high temperature (gas).Therefore, after motor 200 starts, the heat insulating ability in separator portion 206 can easily be maintained.In addition, other effect of the 2nd mode of execution is same with above-mentioned 1st mode of execution.

(the 3rd mode of execution)

Next, with reference to Fig. 2 and Fig. 5, the 3rd mode of execution is described.In the 3rd mode of execution, different from the separator portion 6 (with reference to Fig. 2) with labyrinth structure used in above-mentioned 1st mode of execution, the example using oily separate mode to adopt the separator portion 306 of vortex type is described.In addition, in the drawings, to the formation same with above-mentioned 1st mode of execution, the mark reference character identical with the 1st mode of execution illustrates.

In the motor 300 of the 3rd mode of execution of the present invention, as shown in Figure 5, subsidiary engine bracket 5 is assemblied in the sidewall 302c of cylinder block 302.In addition, between the recess 302d and the recess 5d of cylinder block department of assembly 5a of sidewall 302c, the space portion 304 with regulation shape is formed with.Further, the space portion 304 between cylinder block 302 and subsidiary engine bracket 5 is configured with the separator portion 306 as individual components.In addition, space portion 304 is examples in " space " of the present invention.In addition, motor 300 is examples of " internal-combustion engine " of the present invention.

At this, in the 3rd mode of execution, separator portion 306 adopts vortex type.Separator portion 306 has: be located at the entrance part 306a of sidewall, be located at upper side (Z1 side) export department 306b, form the main part 306c being formed at cyclone chamber between entrance part 306a and export department 306b and the oily passage portion 306d flowed down for the oil after being separated.Vortex type makes blow-by gas at the internal rotating of the main part 306c of the cyclone chamber of formation cylindrical shape, utilizes centrifugation to be separated the mode of the mist of oil comprised in blow-by gas.In addition, vortex type mist of oil capture method is different from mazy type, inertial collision formula etc., and therefore the structure in the separator portion 306 of vortex type differs widely with the structure in the separator portion 6 (with reference to Fig. 2) of mazy type (inertial collision formula) along with the difference of oil mist trapping method.In addition, entrance part 306a is an example of " introducing port " of the present invention.

In addition, under the state that subsidiary engine bracket 5 is assemblied in cylinder block 302, be provided with in space portion 304: the breakthrough part 304a of throughgoing recesses 302d in the horizontal direction; The breakthrough part 304b of the externally cylinder block department of assembly 5a of through subsidiary engine bracket 5 from recess 5d side along Y2 direction; And in the below (Z2 side) of breakthrough part 304a another breakthrough part 304c of throughgoing recesses 302d in the horizontal direction.Further, the mode that separator portion 306 is inserted into breakthrough part 304a with entrance part 306a, export department 306b is inserted into breakthrough part 304b and oily passage portion 306d is inserted into breakthrough part 304c is incorporated in space portion 304.Therefore, in space portion 304, the separator portion 306 with stero shape is configured to except the part except contacting with breakthrough part 304a, breakthrough part 304b, breakthrough part 304c and flow path portion 8a (cooling water path 8), and the gap U that outer surface 306f is included air layer encases.In addition, thus, the temperature of suppression subsidiary engine bracket 5, cylinder block 302 is directly delivered to the main part 306c in separator portion 306.In addition, flow path portion 8a (cooling water path 8) configures in not outstanding to separator portion 306 mode, and can not be subject to the impact of flow path portion 8a (cooling water path 8) thus and arrange cyclone separator arrangement in the space portion 304 in separator portion 306 that fully ensure that internal volume.

In addition, in the 3rd mode of execution, entrance part 306a and oily passage portion 306d is assemblied in breakthrough part 304a and breakthrough part 304c across sealing component 351 and 352 respectively.In this case, utilize the part near the entrance part 306a in sealing component 351 pairs of separator portions 306 and the gap U between cylinder block 302 (recess 302d) to seal (seal), and utilize the part near the oily passage portion 306d in sealing component 352 pairs of separator portions 306 and the gap U between cylinder block 302 (recess 302d) to seal.In addition, other formation of the motor 300 of the 3rd mode of execution is same with above-mentioned 1st mode of execution.

In the 3rd mode of execution, following effect can be obtained.

Namely, in the 3rd mode of execution, as mentioned above, independently be provided with the separator portion 306 of whirlwind (centrifugation) formula relative to cylinder block 302 and subsidiary engine bracket 5 (individual components), be not limited to oily separate mode blow-by gas being carried out to gas-liquid separation thus, easily can load the separator portion 306 of whirlwind (centrifugation) formula with the oily trapping ability corresponding to the design pattern of motor 300.

In addition, in the 3rd mode of execution, the oily passage portion 306d that separator portion 306 comprises the entrance part 306a for importing blow-by gas from cylinder block 302 and circulates for the oil utilizing main part 306c to be separated.Further, the sealing component 351 for sealing the part near entrance part 306a and the gap U between cylinder block 302 is provided with.In addition, the sealing component 352 for sealing the part near oily passage portion 306d and the gap U between cylinder block 302 is provided with.Thus, can prevent a part for the blow-by gas importing separator portion 306 from the part near the part near entrance part 306a and oily passage portion 306d to encase from outside separator portion 306 outer surface 306f, cylinder block 302 and the gap U between subsidiary engine bracket 5 and outer surface 306f (air layer space portion 304) spill.Therefore, can prevent the oil in blow-by gas from invalidly accumulating in this gap U.In addition, other effect of the 3rd mode of execution is same with above-mentioned 1st mode of execution.

(the 4th mode of execution)

Next, with reference to Fig. 1, Fig. 2 and Fig. 6, the 4th mode of execution is described.In the 4th mode of execution, different from the separator portion 6 (with reference to Fig. 2) with labyrinth structure used in above-mentioned 1st mode of execution, the example using oily separate mode to adopt the separator portion 406 of filtering type is described.In addition, in the drawings, to the formation same with above-mentioned 1st mode of execution, the mark reference character identical with the 1st mode of execution illustrates.

In the motor 400 of the 4th mode of execution of the present invention, as shown in Figure 6, subsidiary engine bracket 5 is equipped with to the sidewall 2c of cylinder block 2.In addition, between the recess 2d and the recess 5d of cylinder block department of assembly 5a of sidewall 2c, the space portion 4 with regulation shape is formed with.Further, the space portion 4 between cylinder block 2 and subsidiary engine bracket 5 is configured with the separator portion 406 as individual components.In addition, motor 400 is examples of " internal-combustion engine " of the present invention.

At this, in the 4th mode of execution, separator portion 406 adopts the parts employing filtering type.Separator portion 406 has: the entrance part 406a being located at lower side (Z2 side); Be located at the export department 406b of upper side (Z1 side); And the main part 406c be formed between entrance part 406a and export department 406b.In addition, filter component 401 is configured with in the inner space of main part 406c.Main part 406c has and is formed as the fixing part 406e of all shapes at internal face 406d along substantially horizontal (X-Y plane), and the outer edge of filter component 401 embeds fixing part 406e.

Thus, the blow-by gas flowed into from entrance part 406a among main part 406c upward (Z1 direction) collide filter component 401 and particulate mist of oil is adsorbed in filter component 401 when the slight void of blow-by gas by filter component 401.The oil being adsorbed in filter component 401 becomes drop, falls and returns crankcase 3 (oil storage portion 3b (with reference to Fig. 1)) from entrance part 406a.In addition, the blow-by gas utilizing filter component 401 oil to be carried out gas-liquid separation is imported into Pcv valve 81 and is back in gas handling system 80.In addition, other formation of the motor 400 of the 4th mode of execution is same with above-mentioned 1st mode of execution.

In the 4th mode of execution, following effect can be obtained.

Namely, in the 4th mode of execution, as mentioned above, independently be provided with the separator portion 406 of filtering type relative to cylinder block 2 and subsidiary engine bracket 5 (individual components), be not limited to oily separate mode blow-by gas being carried out to gas-liquid separation thus, easily can load the separator portion 406 of the filtering type with the oily trapping ability corresponding to the design pattern of motor 400.In addition, other effect of the 4th mode of execution is same with above-mentioned 1st mode of execution.

(the 5th mode of execution)

Next, with reference to Fig. 1, Fig. 5 and Fig. 7 ~ Fig. 9, the 5th mode of execution is described.In the 5th mode of execution, illustrate and use the separator portion 6 (with reference to Fig. 2) to using in above-mentioned 1st mode of execution change internal structure thus improve the example in the separator portion 506 of separation function.In addition, in the drawings, to the formation same with the above-mentioned 1st and the 3rd mode of execution, mark the reference character identical with the 3rd mode of execution with the 1st and illustrate.

In the motor 500 of the 5th mode of execution of the present invention, as shown in Figure 7, in space portion 304, be configured with the separator portion 506 with the labyrinth structure similar with separator portion 6 (with reference to Fig. 2), replace the separator portion 306 (with reference to Fig. 5) of the vortex type used in the motor 300 of above-mentioned 3rd mode of execution.In addition, motor 500 is examples of " internal-combustion engine " of the present invention.

At this, in the 5th mode of execution, separator portion 506 has: the entrance part 506a near the central part being located at above-below direction (Z-direction), be located at the export department 506b of upper side (Z1 side) and have the main part 506c of internal structure of regulation.In addition, entrance part 506a is contained from the outside (crankshaft room 3a side) of main part 506c in order to the blow-by gas imported from crankcase 3 (crankshaft room 3a) and is internally extended by straight line shape (straight tube-like).Further, main part 506c has: wall portion 506d, and it is located at the dead astern (Y2 side) of entrance part 506a, for colliding for the blow-by gas imported by entrance part 506a; And stockpiling space 501, it is located at the dead astern of wall portion 506d, stockpiles the blow-by gas after colliding with wall portion 506d.In addition, it is overall to form its inner wall part that main part 506c also has multiple outstanding wall portion 506e, and above-mentioned multiple outstanding wall portion 506e has the labyrinth structure for the blow-by gas circulation stockpiling space 501.In addition, relative with entrance part 506a wall portion 506d is more outstanding to entrance part 506a side (side, arrow Y1 direction) than the inner wall part 506f of above-below direction of the Y2 side stockpiling space 501.In addition, entrance part 506a is an example of " introducing port " of the present invention.

In addition, as shown in Figure 8, entrance part 506a is the sectional shape of the circle with internal diameter D.In addition, wall portion 506d not only extends to the position in the dead astern being located at entrance part 506a with band shape, the mode also in statu quo maintaining its height and position (Z-direction) extends to the position of the inner wall part 506f at the two end part (X1 side and X2 side) in the X-direction of main part 506c with band shape.In addition, as shown in Figure 7, wall portion 506d is formed as the surface with concaveconvex shape.At this, the concaveconvex shape on the surface of wall portion 506d can be mild wavy, also can have the concaveconvex shape more violent than undulation.In addition, concavo-convex size can be identical in the scope containing wall portion 506d, also can be random like (irregular).

In addition, wall portion 506d has the surface easily tending to the acclivitous shape in side of below (arrow Z2 direction) in the blow-by gas making collision to wall portion 506d.In this case, the surface of wall portion 506d tilts in the mode increased along with trend below the separation spacing (X-direction) of entrance part 506a (ejiction opening of blow-by gas).In addition, the horizontal equivalent L (minimum value) from the end (ejiction opening of blow-by gas) of the Y2 side of entrance part 506a to the surface of wall portion 506d is greater than the internal diameter D of entrance part 506a.

Thus, the blow-by gas imported in main part 506c by entrance part 506a constantly collides wall portion 506d.Now, the surface due to wall portion 506d has fluctuating (concaveconvex shape), and therefore blow-by gas can collide the more surface of wall portion 506d.In addition, horizontal equivalent L is greater than internal diameter D, and the relatively large mist of oil of the particle diameter in the particulate mist of oil (oil droplet) therefore comprised in blow-by gas not only can collide wall portion 506d, also can fall due to deadweight between horizontal equivalent L.In addition, owing to colliding wall portion 506d, the mist of oil comprised in blow-by gas can be separated to a certain degree.Further, the oil droplet after separation can fall (dripping) along the surface tilted downwards of wall portion 506d.

In addition, the blow-by gas containing mist of oil of colliding wall portion 506d moves to stockpiling space 501.Now, the flow velocity being diffused into the blow-by gas stockpiling space 501 reduces.In addition, in the figure 7, be divided into the part stockpiling space 501 of side (Z1 side) more top than entrance part 506a and illustrate than the part stockpiling space 501 of entrance part 506a (Z2 side) on the lower, but in fact, as shown in Figure 8, be formed with 1 in the mode near the wall portion of surrounding entrance part 506a and stockpile space 501.In fig. 8, show blow-by gas and be diffused into the part stockpiling space 501 of side (Z1 side) more top than entrance part 506a and the appearance stockpiling the part in space 501 than entrance part 506a (Z2 side) on the lower respectively.Thus, blow-by gas retain in the upper side and lower side of entrance part 506a stockpile space 501 time, mist of oil can be separated further.

In addition, as shown in Figure 7 and Figure 8, the inboard region (area of space of Z1 side) stockpiling the courtyard portion 501a in space 501 expanded to upside than entrance part 506a, multiple (2) outstanding wall portion 506e is interconnected and form labyrinth structure.In addition, under the situation (situation from top view main part 506c) of part of overlooking the labyrinth structure in separator portion 506, stockpile the courtyard portion 501a in space 501, the courtyard portion 506g of 2 outstanding wall portion 506e and main part 506c overlapping in the mode mutually with the interval (Z-direction) of regulation with the state of carrying out expanding along substantially horizontal (X-Y plane).And, space (gas flow path) is expanded to the inboard of the courtyard portion 501a stockpiling space 501 by the slit portion 502 (with reference to Fig. 8) being formed at the courtyard portion 501a stockpiling space 501, and space is expanded to the inboard of the 1st outstanding wall portion 506e by the slit portion 503 (with reference to Fig. 8) being formed at the 1st (Z2 side) outstanding wall portion 506e.Further, space is expanded to the inboard of the 2nd outstanding wall portion 506e by the slit portion 504 (with reference to Fig. 8) being formed at the 2nd (Z1 side) outstanding wall portion 506e.Further, the through hole utilizing the folding corner region in the inboard space (lower space of courtyard portion 506g) of the outstanding wall portion 506e of the 2nd to be formed is formed with export department 506b (with reference to Fig. 8).

In addition, courtyard portion 501a, 2 outstanding wall portion 506e and courtyard portion 506g are rectangular shape when overlooking.In addition, slit portion 502 is intercommunicating pores of the L font in the gap formed between the respective edge in the Y1 side of courtyard portion 501a and X2 side and the inner wall part 506f of main part 506c.Equally, slit portion 503 is intercommunicating pores of the L font in the Y2 side of formation the 1st outstanding wall portion 506e and the gap between the edge of X1 side and the inner wall part 506f of main part 506c.In addition, slit portion 504 is intercommunicating pores of the L font in the Y1 side of formation the 2nd outstanding wall portion 506e and the gap between the edge of X2 side and the inner wall part 506f of main part 506c.That is, the interconnected Y1 side in the inside by main part 506c of slit portion 502 ~ 504 and the bight of X2 side and Y2 side and an interconnected cornerwise side side, the bight of X1 side and the opposing party side.Thus, be temporarily accumulated in stockpile space 501 blow-by gas in the x-direction and the z-direction back and forth wriggle and in order upward through slit portion 502 ~ 504 exit portion 506b.

In addition, in the 5th mode of execution, separator portion 506 has the oily exhaust port 506h discharged by the oil be accumulated in the blow-by gas stockpiling space 501 (the aqueous oil after separation).As shown in Figure 8, oily exhaust port 506h is set to (X-direction) upper shed in the horizontal direction near the bottom 501b being positioned at the Z2 side stockpiling space 501 of main part 506c.At this, as shown in Figure 9, oily exhaust port 506h is formed as having relative to the part of the inner wall part 506f of the X2 side extended by above-below direction (Z-direction) elongate shape that extends in z-direction and to stockpiling space 501 opening.Thus, be separated the liquid oil that falls at wall portion 506d and be suitably discharged to crankcase 3 (oil storage portion 3b (with reference to Fig. 1)) with stockpiling in space 501 by the oily exhaust port 506h of elongate shape.Now, oil mainly flows out from the cross section of the lower side (Z2 side) of the oily exhaust port 506h of elongate shape, on the other hand, the access (aperture portion 505 (approximate region represented by dashed line in figs. 8 and 9) of blowing air) that will stockpile space 501 and be communicated with crankcase 3 (crankshaft room 3a (with reference to Fig. 7)) is produced in the cross section of the upper side (Z1 side) of oily exhaust port 506h.Therefore, stockpiling in space 501, be discharged to air in the oil of oil storage portion 3b and crankshaft room 3a by oily exhaust port 506h fast exchange, realize the rapid discharge of oil.In addition, flow path portion 8a (cooling water path 8) configures in not outstanding to separator portion 506 mode.In addition, thus, the impact of flow path portion 8a (cooling water path 8) can not be subject to and cyclone separator arrangement is set in the space portion 504 in separator portion 506 that fully ensure that internal volume.

In addition, as shown in Figure 7, the wall portion of the flow path portion 8a of subsidiary engine bracket 5 is not the height and position (Z-direction) corresponding with wall portion 506d, but configures along the outer surface 506j stockpiling the part in space 501 of the Z1 side in separator portion 506.Thus, the space 501 that stockpiles stockpiling blow-by gas utilizes the cooling water of relatively-high temperature and is indirectly heated.Therefore, be configured to just to flow into and the water vapour collided the blow-by gas after wall portion 506d is not easy to condense from entrance part 506a, and the blow-by gas of seeking from stockpiling space 501 is separated mist of oil further.In addition, other formation of the motor 500 of the 5th mode of execution is same with above-mentioned 1st mode of execution.

In the 5th mode of execution, following effect can be obtained.

That is, in the 5th mode of execution, as mentioned above, separator portion 506 comprises: for importing the entrance part 506a of blow-by gas from cylinder block 2; Wall portion 506d, it is located at the dead astern of entrance part 506a, for colliding for the blow-by gas imported by entrance part 506a; And stockpiling space 501, it is located at the dead astern of wall portion 506d, stockpiles the blow-by gas of colliding after wall portion 506d.Thus, can make constantly collide wall portion 506d by the entrance part 506a blow-by gas imported in main part 506c and be effectively separated the particulate mist of oil (oil droplet) comprised in blow-by gas.Further, make the blow-by gas after collision be diffused into upper and lower stockpiling space 501 and reduce flow velocity and reside at this and stockpile space 501, mist of oil can be separated further thus.Therefore, the function in the separator portion 506 of separating oil can be improved.

In addition, in the 5th mode of execution, in separator portion 506, be provided with the oily exhaust port 506h for the elongate shape extended by above-below direction (Z-direction) of being discharged by the oil stockpiled in the blow-by gas that stockpiles in space 501.Thus, wall portion 506d can be separated the liquid oil falling (dripping) and suitably be discharged to crankcase 3 (oil storage portion 3b) with stockpiling in space 501 by the oily exhaust port 506h of elongate shape.Now, oil is mainly the cross section outflow of the lower side (Z2 side) the oily exhaust port 506h of elongate shape from cross section, on the other hand, the cross section of the upper side (Z1 side) in oily exhaust port 506h can produce the access (aperture portion 505 of blowing air) that will stockpile space 501 and be communicated with crankcase 3, therefore stockpiling in space 501, the air in the oil of discharge and crankcase 3 is by oily exhaust port 506h fast exchange.Consequently sticking for tool liquid oil can be discharged rapidly from oily exhaust port 506h.In addition, liquid oil can not be retained and always guarantee to have fixing spatial volume stockpile space 501, therefore easily can maintain the function in separator portion 506.

In addition, in the 5th mode of execution, wall portion 506d is formed in the mode on the surface with concaveconvex shape.Thus, produce on the surface of wall portion 506d and rise and fall (concaveconvex shape), blow-by gas correspondingly can be made to collide the more surface of wall portion 506d, the surface portion of concaveconvex shape therefore can be utilized to assign to trap the particulate mist of oil comprised in blow-by gas efficiently.

In addition, in the 5th mode of execution, wall portion 506d is configured to have the surface of the shape that direction from below (arrow Z2 direction) to the blow-by gas after making collision to wall portion 506d that easily tend to tilts.Thus, the blow-by gas after collision can be made easily to lead be formed at than entrance part 506a on the lower stockpile space 501, therefore blow-by gas stockpiles from lower layer side to upper layer side stockpiling in space 501, blow-by gas correspondingly can be made for longer periods to reside at and stockpile space 501.Thus, mist of oil can be separated fully stockpiling in space 501.In addition, other effect of the 5th mode of execution is same with above-mentioned 1st mode of execution.

In addition, will be understood that whole aspects of mode of execution of disclosure are non-limiting for illustration.Scope of the present invention be can't help the explanation of above-mentioned mode of execution and is represented and represented by claims, is also included in the whole changes in the implication and scope that are equal to claims.

Such as, in above-mentioned 1st ~ 5th mode of execution, show resinous separator portion 6 (206,306,406,506) space portion 4 (204 between cylinder block 2 (202,302) and subsidiary engine bracket 5 is configured at, 304) example, but the present invention is not limited thereto.That is, also metal separator portion 6 can be configured in the space portion 4 between cylinder block 2 and subsidiary engine bracket 5.Even metal separator portion, due to heat insulation across space portion 4 (gap S), also not easily directly can be subject to the impact of external air temperature, therefore can maintain the heat insulating ability in metal separator portion, prevent the water vapour in the blow-by gas circulated in separator portion from condensing.

In addition, in above-mentioned 1st ~ 5th mode of execution, show and will be exclusively used in subsidiary engine bracket 5 and the cylinder block 2 (202 of the water pump 70 of assembling as subsidiary engine, alternator and compressor, 302) apply the example of the cyclone separator arrangement of internal-combustion engine of the present invention under the state assembled, but the present invention is not limited thereto.Such as, also cyclone separator arrangement of the present invention can be applied to the internal-combustion engine (motor) being assemblied in and the timing chain cover of engine main body 10 or timing transmission band cover being doubled as " subsidiary engine mounting structure " of the present invention.

In addition, in above-mentioned 1st ~ 5th mode of execution, show in separator portion 6 (206,306,406,506) outer surface 6f (206f, 306f, 406f) and space portion 4 (204,304) internal face 4d (204d, be provided with the example of the thermal-protective coating comprising air layer in gap S (T, U) 304d), but the present invention is not limited thereto.Such as, " thermal-protective coating " of the present invention also can adopt the thermal-protective coating comprising resin material.Such as, also by under the state in embedded space portion of separator portion 64, the foaming kind thermal-protective materials such as polyurethane resin can be filled in gap S.In this case, can only to the gap S filling-foam class thermal-protective material of the part corresponding with subsidiary engine bracket 5, also can to both gap S filling-foam class thermal-protective material of the part corresponding with subsidiary engine bracket 5 and the part corresponding with cylinder block 2.In addition, not only can filling-foam class thermal-protective material, also can to fiber thermal-protective materials such as gap S filled glass fibers.In addition, also can under the state of main part 6c (outer surface 6f) encasing (covering) separator portion 6 with foaming kind thermal-protective material or fiber thermal-protective material, by embedded space portion of separator portion 64.In this case, also air layer (thermal-protective coating) can be filled with further in the gap of the separator portion 6 covered by coatings (thermal-protective coating) such as foaming kind thermal-protective material or fiber thermal-protective materials and subsidiary engine bracket 5 (cylinder block 2).

In addition, the above-mentioned 1st, the 2nd with in the 5th mode of execution, show cyclone separator arrangement and adopt mazy separator portion 6 (206,506) example, in above-mentioned 3rd mode of execution, show the example in the separator portion 306 of vortex type, in above-mentioned 4th mode of execution, show the example in the separator portion 406 adopting filtering type, but the present invention is not limited thereto.Cyclone separator arrangement also can use the separator portion that have employed oily separate mode other than the above.Such as, also can form as follows in " separator portion " of the present invention: separator portion is cut into multiple separation chamber, obtain blow-by gas from the separation chamber of multiple separation chamber, and from another separation chamber release blow-by gas multiple separation chamber.

In addition, in above-mentioned 1st, the 2nd, the 4th and the 5th mode of execution, show and make the wall portion of the flow path portion 8a of subsidiary engine bracket 5 and the separator portion 6 (206 corresponding with this wall portion, 406,506) the outer surface 6f (206f of main part 6c (206c, 406c, 506c), the example that part 406f) contacts with each other and forms, but the present invention is not limited thereto.That is, the outer surface 6f in separator portion 6 also can be configured in the mode relative to the wall portion of flow path portion 8a with some gaps (air layer etc.).Thus, when motor 100 stops being placed on the low environment of external air temperature, the startup of motor 100 time cooling water temperature of circulating in flow path portion 8a such as (after just starting) when fully not heating up, also can the temperature in control separation device portion 6 reduce.

In addition, in above-mentioned 5th mode of execution, the mode showing the surface with concaveconvex shape forms the example of wall portion 506d, but the present invention is not limited thereto.Such as, also wall portion 506d can be formed in the mode with plat surface.

In addition, in above-mentioned 5th mode of execution, show the example being provided with 1 entrance part 506a in separator portion 506, but the present invention is not limited thereto.Also separator portion 506 can be configured to relative to supplying the wall portion 506d of blow-by gas collision to have multiple entrance part 506a side by side at its front side.In addition, not only can be formed entrance part 506a in the mode with circular sectional shape, also can be formed entrance part 506a in the mode with polygonal shape.In addition, also can be in motor 500, the formation (formation of the space portion 204 as shown in above-mentioned 2nd mode of execution) that the space portion 304 (gap U) near separator portion 506 is communicated with crankshaft room 3a.

In addition, in above-mentioned 5th mode of execution, show there is internal diameter D and the mode that straight line shape (straight tube-like) extends forms the example of entrance part 506a, but the present invention is not limited thereto.In order to make the blow-by gas of importing main part 506c effectively collide wall portion 506d, also can in the mode making internal diameter D change to form entrance part 506a.

In addition, in above-mentioned 1st ~ 5th mode of execution, show the example of the motor 100 ~ 400 of the automobile applying the present invention to comprise petrol engine, but the present invention is not limited thereto.That is, as long as internal-combustion engine, the gas engine (internal-combustion engine such as diesel engine and natural gas engine) beyond petrol engine can also be applied the present invention to.In addition, also can apply the present invention to be set to the internal-combustion engine of automobile with the driving source (power source) of such as equipment machine in addition.

Claims

1. an internal-combustion engine, is characterized in that, possesses:

Cylinder block;

Subsidiary engine mounting structure, it is configured in the sidewall of above-mentioned cylinder block, and subsidiary engine is assemblied in above-mentioned subsidiary engine mounting structure; And

Separator portion, it is configured in the space between above-mentioned cylinder block and above-mentioned subsidiary engine mounting structure, and independently arranges, for carrying out gas-liquid separation to blow-by gas relative to above-mentioned cylinder block and above-mentioned subsidiary engine mounting structure.

2. internal-combustion engine according to claim 1, wherein,

Above-mentioned separator portion is so that the state having gap for above-mentioned subsidiary engine mounting structure of looking younger is configured in the space between above-mentioned cylinder block and above-mentioned subsidiary engine mounting structure.

3. internal-combustion engine according to claim 2, wherein,

Above-mentioned separator portion is configured in the space between above-mentioned cylinder block and above-mentioned subsidiary engine mounting structure with the state relative to above-mentioned subsidiary engine mounting structure and above-mentioned both cylinder block with gap.

4. the internal-combustion engine according to claim 2 or 3, wherein,

Thermal-protective coating is provided with in gap between above-mentioned separator portion and at least above-mentioned subsidiary engine mounting structure.

5. internal-combustion engine according to claim 4, wherein,

Above-mentioned thermal-protective coating comprises air layer.

6. the internal-combustion engine according to any one in claim 1 to 5, wherein,

Above-mentioned separator portion is formed as having labyrinth structure in inside.

7. the internal-combustion engine according to any one in claim 1 to 6, wherein,

Above-mentioned separator portion comprises introducing port, and above-mentioned introducing port is used for importing blow-by gas from above-mentioned cylinder block,

Also possess sealing component, above-mentioned sealing component seals the gap between part near the above-mentioned introducing port in above-mentioned separator portion and above-mentioned cylinder block.

8. the internal-combustion engine according to any one in claim 1 to 6, wherein,

Above-mentioned separator portion is to have the state configuration in gap relative to above-mentioned subsidiary engine mounting structure and above-mentioned both cylinder block, above-mentioned gap forms thermal-protective coating, and above-mentioned thermal-protective coating comprises air layer, and above-mentioned thermal-protective coating is communicated with the inside of above-mentioned cylinder block.

9. the internal-combustion engine according to any one in claim 1 to 8, wherein,

Above-mentioned subsidiary engine mounting structure comprises cooling water path,

Above-mentioned separator portion is configured near the above-mentioned cooling water path of above-mentioned subsidiary engine mounting structure.

10. internal-combustion engine according to claim 9, wherein,

Above-mentioned cooling water path configures in not outstanding to above-mentioned separator portion mode.

11. internal-combustion engines according to any one in claim 1 to 10, wherein,

Above-mentioned separator portion comprises: introducing port, and it is for importing blow-by gas from above-mentioned cylinder block; Wall portion, it is located at the dead astern of above-mentioned introducing port, for colliding for the above-mentioned blow-by gas imported by above-mentioned introducing port; And stockpiling space, it is located at the dead astern of above-mentioned wall portion, stockpiles and collides the blow-by gas after above-mentioned wall portion.

12. internal-combustion engines according to claim 11, wherein,

Above-mentioned separator portion also comprises the oily exhaust port of elongate shape, and above-mentioned oily exhaust port extends at above-below direction, for discharging the above-mentioned oil stockpiled in the blow-by gas stockpiled in space.

The cyclone separator arrangement of 13. 1 kinds of internal-combustion engines, is characterized in that,

Possesses separator portion, above-mentioned separator portion is configured at the space between cylinder block and subsidiary engine mounting structure, and independently arrange relative to above-mentioned cylinder block and above-mentioned subsidiary engine mounting structure, for carrying out gas-liquid separation to blow-by gas, above-mentioned subsidiary engine mounting structure is configured at the sidewall of above-mentioned cylinder block, and subsidiary engine is assemblied in above-mentioned subsidiary engine mounting structure.